John, the best all around 9mm ammo which would be low recoil, highly effective is hands down is the Liberty Ammunition 9MM : budsgunshop.com/product_info.php/products_id/86374/liberty+ammunition+9mm+p+civil+defense+9mm+50+gr+lead-free+20rd+box -------------------------------------- Details here : youtube.com/watch?v=G0EVjsX6G98

John, Critical Defense Lite ammunition offers an effective, reduced recoil option for any shooter looking to minimize felt recoil of their lightweight, compact personal protection firearm. >>> budsgunshop.com/product_info.php/products_id/95564/hornady+critical+defense+9mm+lite+100gr+25rd+box ....for target practice, a lower powered 115 GR 9MM ammo I really like PMC Bronze >>> natchezss.com/pmc-bronze-handgun-ammunition-9mm-luger-115-gr-fmj-1150-fps-50-box.html .....Have a great day!

John, the Glock 19 gen 5 is very reliable and should function just fine with any 9mm ammo. Here's a link for target ammo I'd recommend............ budsgunshop.com/product_info.php/products_id/67323/american+eagle+9mm+full+metal+jacket+115gr+50rd+box........... And here's a link for defense ammo I would recommend......... budsgunshop.com/product_info.php/products_id/56783/hornady+9mm+critical+defense+115+grain+critical+defense+tip+25rd+box.........both options have minimal recoil and should function just fine in your Glock 19. Hope this helps and you're very welcome.